| import java.util.Collection; |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.Map; |
| import org.checkerframework.checker.nullness.qual.Nullable; |
| import org.checkerframework.dataflow.qual.Pure; |
| |
| class Other { |
| public static final class StaticIterator<T> implements Iterator<T> { |
| Enumeration<T> e; |
| |
| public StaticIterator(Enumeration<T> e) { |
| this.e = e; |
| } |
| |
| public boolean hasNext() { |
| return e.hasMoreElements(); |
| } |
| |
| public T next() { |
| return e.nextElement(); |
| } |
| |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| |
| public final class FinalIterator<T> implements Iterator<T> { |
| Enumeration<T> e; |
| |
| public FinalIterator(Enumeration<T> e) { |
| this.e = e; |
| } |
| |
| public boolean hasNext() { |
| return e.hasMoreElements(); |
| } |
| |
| public T next() { |
| return e.nextElement(); |
| } |
| |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |
| |
| class Entry<K, V> implements Map.Entry<K, V> { |
| public V setValue(V newValue) { |
| throw new RuntimeException(); |
| } |
| |
| @SuppressWarnings("purity") // new and throw are not allowed, ignore |
| @Pure |
| public K getKey() { |
| throw new RuntimeException(); |
| } |
| |
| @SuppressWarnings("purity") // new and throw are not allowed, ignore |
| @Pure |
| public V getValue() { |
| throw new RuntimeException(); |
| } |
| } |
| |
| interface Function<F, T extends @Nullable Object> { |
| T apply(@Nullable F from); |
| |
| @Pure |
| boolean equals(@Nullable Object obj); |
| } |
| |
| enum IdentityFunction implements Function<Object, @Nullable Object> { |
| INSTANCE; |
| |
| public @Nullable Object apply(@Nullable Object o) { |
| return o; |
| } |
| } |
| |
| abstract class FilteredCollection<E> implements Collection<E> { |
| public boolean addAll(Collection<? extends E> collection) { |
| for (E element : collection) {} |
| return true; |
| } |
| } |